<!--路由导航链接-->
<div class="logo">
  <a href="http://www.kaikeba.com/">
    <img src="http://student.kaikeba.com/assets/blue_logo-57d711624a.png">
  </a>
</div>
<div class="nav">
  <a routerLink="login" routerLinkActive="active">登录</a>
  <a routerLink="register" routerLinkActive="active">注册</a>
</div>

<router-outlet></router-outlet>
